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Hicas On R33

wasfishing
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wasfishing Rookie

wasfishing

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Ive tried searching but cant find much info, ive installed a hicas lock bar on my R33 gtst and lost powersteering (knew it would happen)

just wondering if theres a simple fix to make the power steering work again, and make the hicas light go away.

please dont flame me i tried seaching

Cheers

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tm_r33 Experienced

tm_r33

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Posted

the hicas in 33 is electronic not hydraulic as in 32. There for it has a controller in the boot. Its bolted to the underside of the parcel shelf. I have ran lock bars in multiple 33 skylines and can tell u this.... Removal of the eletric steering rack in order to install lock bar will work perfectly fine as long as u dont unplug the controller in the boot. I run a lock bar in my current track car and it was as simple as unbolting and unpluging rear rack and chucking lock bar in. Power steering and speed sensitive steering still works fine. If you unplug the control unit in boot u loose power steering. I think this is due to the speed sensors in the 33s steering. Screwing around with the steering angle sensor behind the steering wheel has the same effect.

Crawl under ur car and cable tie the rear steer plugs to your lock bar. Hopefully no one thought they should be cut off.

Get your head in the boot and make sure ur hicas control is still there and that it plugged in.

Pm me if ur still stuck there is a few other small things i can think of that may affect.

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wasfishing Rookie

wasfishing

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unplugged the control box in the boot and the hicas light is now gone, but powersteering has still not returned, think there mighta been sumthing wrong with one of the steering sensors as the light was on before i locked it and powersteering wasnt there either? what sensors could be faulty and how can i check them??

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tm_r33 Experienced

tm_r33

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yer the fact u didnt mention that power steering wasnt working before the lock bar install changes everything lol. there is a steering agle sensor behind the steering wheel. there is a vehicle speed vs steering calculation done withing the hicas control unit.. so faulty unit. u could have low steering fluid. your power steering pump might have shit its self. i think from memory there is a plug behind the headunit thats related to steering angle sensor or speed sensitive steering... if its unplugged u loose power steering.

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  • 6 months later...
89CAL Grand Master

89CAL

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is your speedo working fine?

You can go on youtube and look for HICAS diagnostic it will show you and tell you how to do it.

Basically but I think it is turn car on, steer left and right 10 times in 10 seconds (or something like that) hit the brake twice, drive forward a couple of metres, stop and hit the brake pedal again (may be clutch pedal instead of brake, like i said youtube it)

that will give you HICAS diagnostic. Most common problem as said is aftermarket steering wheel which gives the steering angle sensor incorrect readings, Mine did this casue my boss kit was installed slightly out of position and wasnt engaging instantly. Little things can make it stuff up but this never made my steering heavy just bought the HICAS light on

First things first, check your Power steering resivour is at the correct level, there are no leaks, and your power steering belt is the correct tightness

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Munkyb0y Grand Master

Munkyb0y

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Posted

swap out the steering position sensor and the hicas ecu with known working units and see if either fixes your problem.

i did both, and it turned out to be the ecu in the boot.

i have a working steering position sensor for sale HERE.

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  • 3 weeks later...
JadGTST33 Community Regular

JadGTST33

Posted
Posted

My power steering in my S1 R33 GTST died about 12 months ago. After a bit of research (mostly here on SAU) I grabbed a second hand Hicas ECU from an import wrecker, quickly plugged it in and went for a drive around the block to ensure it fixed the power steering, which it did. 20 Bucks later I was done!

I've always had an aftermarket steering wheel fitted, which means my hicas light has always permanently been on... I gotta get into the dash cluster and pull the bulb for the hicas light one day.

After the PS issue, I've since installed a Hicas lock bar which changed nothing with with the power steering... Just make sure you leave the Hicas unit connected, and zip tie the old plugs out of the way up around the hicas bar.

I'd be very surprised if doing the above doesn't fix your problem.

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